There are some really nice things happening in this map especially for a first map. The architecture, lighting, texture detailing and the use of fog as low cloud mostly work really well. But then the framerate drops to *unplayable* in parts. So at times I enjoyed it, at others it really really annoyed me. The bounce pad to Rail Gun in the top tower, covered in low clouds is a great effect. Some great places to frag, but then there is a few useless, twisty, tight bits that could have been left out all together.
Personaly, I think this map shows a lot of potential but needs more work to be really playable.